Nereids
Appearance
Nereids (NEER-ee-eds): in Greek Mythology, these are sea nymphs, the fifty daughters of Nereus and Doris. They often accompany Poseidon and are always friendly and helpful towards sailors fighting perilous storms. They are associated with the Mediterranean Sea. The most notable of them is Thetis, wife of Peleus and mother of Achilles; and Amphitrite, wife of Poseidon.
Nereids
The third-largest moon of the planet Neptune is named Nereid after these.